Marvel Studios finally confirmed what we’ve known for some time. Aaron Taylor-Johnson and Elizabeth Olsen are joining Joss Whedon‘s Avengers: Age of Ultron, opening May 1, 2015. They’ll play the brother sister duo of Quicksilver and Scarlett Witch, who might have a bit of a problem with how The Avengers are doing things. Read the full press release below.

Aaron Taylor-Johnson and Elizabeth Olsen have officially joined the Avengers family as the brother-sister duo of Quicksilver and Scarlet Witch in Marvel’s “Avengers: Age of Ultron,” the highly-anticipated sequel to 2012’s smash-hit “Marvel’s The Avengers”! “Avengers: Age of Ultron” arrives in theaters May 1, 2015.

Taylor-Johnson broke out with his roles as Dave Lizewski in the “Kick-Ass” franchise and with his portrayal of a young John Lennon in “Nowhere Boy,” for which he won an Empire Award for Best Newcomer. Since then, Taylor Johnson has starred in 2012’s critically-acclaimed “Anna Karenina” and director Oliver Stone’s “Savages.”

Since making her big screen debut in 2011 with “Silent House” and “Martha Marcy May Marlene,” for which the actress garnered a number of awards and nominations, Olsen has gone on to star alongside the likes of Robert DeNiro and Sigourney Weaver in “Red Lights,” Josh Brolin and Samuel L. Jackson in director Spike Lee’s “Oldboy.”

Taylor-Johnson and Olsen will share the screen as leads in the highly anticipated “Godzilla” remake scheduled for a May 2014 release.

“Avengers: Age of Ultron” will bring the Marvel Universe’s biggest heroes together again to face one of their biggest villains, with “Marvel’s The Avengers” director Joss Whedon returning to write and direct the sequel. “Marvel’s The Avengers” was released in 2012 and went on to earn $1.5 billion worldwide, making it the third-largest grossing movie of all time.

In addition to “Avengers: Age of Ultron,” Marvel Studios will release a slate of films based on the Marvel characters including “Captain America: The Winter Soldier” on April 4, 2014; “Guardians of the Galaxy” on August 1, 2014; and “Ant-Man” on July 31, 2015.

Very nice of them to “confirm” this when reports of each signing their deals hit the news a few weeks back, with rumors of their probable appearance dating months before that. But for the few skeptical ones out there, here’s your proof that Taylor-Johnson and Olsen are joining the Marvel Universe.